High-energy-density capacitors for instant power

NESS Capacitor Co has released the first 2.7V ultracapacitors.

NESS Capacitor Co has released the first 2.7V ultracapacitors.

The first ultracapacitor family with a continuous operating voltage rating higher than 2.5V is available in three capacitance sizes; 1700, 3500 and 5000F.

Boasting parametric superiority over its competition, the NESS 2.7V ultracapacitors have the highest capacitance and energy storage densities, and the lowest equivalent series resistance (ESR) of any commercially available components of comparable size and weight.

The 5000F model has an energy density of 5.8Wh/kg and an ESR value of only 0.4mohm, at currents of over 500A.

These durable, efficient, high capacity energy storage components are revolutionising the power market by reducing battery size requirements, extending battery life expectancy, and improving peak power availability.

The key to the performance of the 2.7V ultracapacitor is its porous carbon electrodes.

NESS's proprietary and patented electrode manufacturing processes are responsible for the component's outstanding performance characteristics.

Those characteristics make the NESS 2.7V ultracapacitor an ideal candidate for high peak power applications such as electric vehicle (EV) and hybrid electric vehicle (HEV) acceleration and braking, industrial actuation and control, wind and fuel cell power conversion and uninterruptible power supply (UPS) switchover bridging.

With approximately 10 times the power density of a similar sized battery and the capability of being charged and discharged over 100 times faster than a battery, ultracapacitors are finding their greatest uses as intermediate power sources, or battery performance enhancers.

Used in this manner, an ultracapacitor aids the primary power source or battery in two distinct ways.

First, it reduces the required battery size.

Second, it extends the effective life span of the battery.

Properly implemented in a power-sourcing scheme, the ultracapacitor delivers the peak power demanded by the load, allowing a smaller battery to be used as the primary power source.

Repeated high power demands are the primary cause of premature battery aging.

By supplying the peak load demands for the battery, the ultracapacitor helps the battery last longer.

NESS ultracapacitors are demonstrating very long life spans as well.

Samples subjected to more than 500,000 charge and discharge cycles show only a typical loss of capacitance (less than 20%) and even a smaller than typical increase in ESR (less than 2X).

The long life span of the NESS ultracapacitor means that it may never need to be replaced.

The ultracapacitor can help designers make their products meet their power performance objectives using smaller batteries that will last longer, while keeping the overall product size and cost to a minimum.

The simplicity and efficiency of NESS's patented electrode forming process allows NESS to produce electrodes readily and inexpensively, in a great variety of shapes and sizes.

This ability enables NESS to respond quickly to the ever-changing demands of its various market segments, and produce samples of new size and shape ultracapacitors very cost effectively.

Additionally, due to the flexibility of NESS's ultramodern processes, it can rapidly move a custom ultracapacitor prototype into mass production without large development costs to absorb or pass on to its customers.

With the three initial members of the new 2.7V ultracapacitor family available now, the size and capacitance value desired and the number of pieces that are to be purchased will determine pricing.

For example, 1700F 2.7V ultracapacitors start at $110 US, for sample quantities.

Back to top